1 /*
2 * Copyright (C) 2023 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "dex/dex_file_verifier.h"
18 #include "dex/standard_dex_file.h"
19
LLVMFuzzerInitialize(int * argc,char *** argv)20 extern "C" int LLVMFuzzerInitialize([[maybe_unused]] int* argc, [[maybe_unused]] char*** argv) {
21 // Set logging to error and above to avoid warnings about unexpected checksums.
22 android::base::SetMinimumLogSeverity(android::base::ERROR);
23 return 0;
24 }
25
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)26 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
27 // Do not verify the checksum as we only care about the DEX file contents,
28 // and know that the checksum would probably be erroneous (i.e. random).
29 constexpr bool kVerify = false;
30
31 auto container = std::make_shared<art::MemoryDexFileContainer>(data, size);
32 art::StandardDexFile dex_file(data,
33 /*location=*/"fuzz.dex",
34 /*location_checksum=*/0,
35 /*oat_dex_file=*/nullptr,
36 container);
37
38 std::string error_msg;
39 art::dex::Verify(&dex_file, dex_file.GetLocation().c_str(), kVerify, &error_msg);
40
41 return 0;
42 }
43